Fix edit tools

[crivetimihai]

Problem: After merging PR #731, both Add Tool and Edit Tool forms stopped working with multiple validation errors.

Issues Found:

1. Missing name field - PR Fix #715: align Add & Edit Tool fields & prefill MCP integration/request #731 removed the name field and added gateway_name/original_name fields that don't exist in the database schema
2. MCP integration type validation - Backend prevents changing tools to MCP type, but form allowed it
3. Request type validation - Form was defaulting to "SSE" for REST tools, causing validation errors

Fixes Applied:

admin.html:

• Restored the required name field to both Add and Edit forms
• Removed unsupported gateway_name and original_name fields

admin.js:

• Added logic to disable integration type dropdown for MCP tools (prevents invalid changes)

admin.py:

• Made integration_type conditional - only included when provided (not disabled)
• Made request_type conditional - only included when provided
• Added debug logging for form data

[rakdutta]

PR Testing Summary:

• make serve – Pass
• make test – Pass (80% coverage; 1658 passed, 11 skipped, 63 warnings in 95.32s)
• make autoflake isort black flake8 – No errors
• make pylint – Pass (Code rated 10.00/10)
• make smoketest – Pass (✅ Smoketest passed!)
• make doctest – Pass (468 passed, 6 skipped, 3 warnings in 24.67s)

Verified Add/Edit Tool functionality for the integration type – working as expected.
⚠ Note: In the edit_form, the integration_type for MCP can currently be changed to REST, which is not expected. This will be addressed under issue #715.

Proceeding to re-open issue #715.